Do You Know?

1. Are tea or coffee addictive?
2. Is the Sun closer to us in summer or in winter?
3. Why do you get a strange feeling in the "pit in your stomach"
on a roundabout (merry-go-round or carousel)?
4. The temperature of Bangalore is almost always a few degrees less than that of Chennai, even though they are at the same latitude. Why?
5. A cell phone needs to be regularly charged but an ordinary land-line telephone does not need charging. Why?